9 Fuel cell; Hydrogen fuel cells; Fuel cell stack; Electricity-generating fuel cell power modules; Electrolyzers; Hydrogen and fuel cell power generation systems comprised primarily of fuel cell stacks, batteries, electronic controls, electric switches, electrical switchgear for voltage boosting, electric converters, hydrogen storage fuel cells, automatic valves, pressure regulators, electric sensors, controlled volume pumps, e-axles for vehicles, electric coolers, motors for land vehicles, motors and engines not for land vehicles, electric compressors, heat exchangers not being parts of machines, hydrocarbon reformers, and fluid and heat transfer piping; Hydrogen and fuel cell power generation subsystems comprised primarily of fuel cell stacks, batteries, electronic controls, electric switches, electrical switchgear for voltage boosting, electric converters, hydrogen storage fuel cells, automatic valves, pressure regulators, electric sensors, controlled volume pumps, e-axles for vehicles, electric coolers, motors for land vehicles, motors and engines not for land vehicles, electric compressors, heat exchangers not being parts of machines, hydrocarbon reformers, and fluid and heat transfer piping; Integrated fuel cell power generating systems and subsystems comprised primarily of fuel cell stacks, automatic valves, controlled volume pumps, electric compressors, pressure regulators, electric sensors, electronic controls, hydrocarbon reformers, and fluid and heat transfer piping; components for hydrogen and fuel cell power generation systems and their sub-systems, namely, fuel cell stacks, batteries, electronic controls, electric switches, electrical switchgear for voltage boosting, electric converters, hydrogen storage fuel cells, automatic valves, pressure regulators, electric sensors, and controlled volume pumps; Automobile-grid connected fuel cell power generation systems comprised primarily of fuel cell stacks, batteries, electronic controls, electric switches, electrical switchgear for voltage boosting, electric converters, hydrogen storage fuel cells, automatic valves, pressure regulators, electric sensors, controlled volume pumps, e-axles for vehicles, electric coolers, motors and engines for land vehicles, motors and engines not for land vehicles, electric compressors, heat exchangers not being parts of machines, hydrocarbon reformers, and fluid and heat transfer piping; Components for automobile grid-connected fuel cell power generation system and its sub-systems, namely, fuel cell stacks, batteries, electronic controls, electric switches, electrical switchgear for voltage boosting, electric converters, hydrogen storage fuel cells, automatic valves, pressure regulators, electric sensors, and controlled volume pumps; power controllers; Hydrogen and fuel cell detection device in the nature of an electronic sensor; Downloadable computer software for controlling, measuring, monitoring and reporting on fuel consumption, maintenance and repair in fuel cell systems; Detecting module used to measure fuel cell AC electrical impedance and/or DC voltage to determine electrical efficiency; Detection device in the nature of an electronic sensor for detecting hydrogen leaks in hydrogen generators; Fuel cell test stations; Automated fuel cell test stations; Test stations for hydrogen generators; Downloadable diagnostic computer software for processing and validating fuel cell test parameter data for use in fuel cell test stations; Downloadable diagnostic computer software for processing and validating fuel cell test parameter data for use in automated fuel cell test stations; Integrated fuel cell systems comprised primarily of fuel cell stacks, batteries, electronic controls, electric switches, electrical switchgear for voltage boosting, electric converters, hydrogen storage fuel cells, automatic valves, pressure regulators, electric sensors, controlled volume pumps, e-axles for vehicles, electric coolers, motors for land vehicles, motors and engines not for land vehicles, electric compressors, heat exchangers not being parts of machines, hydrocarbon reformers, and fluid and heat transfer piping; Anodes, sensors, cathodes, separators for use in water electrolyzers; Hydrogen power storage systems, namely, systems containing an electrolyzer for converting electrical energy to hydrogen gas, and a means of storing the hydrogen and means for converting the hydrogen back to electrical energy; Parts and fittings for fuel cells and electrolyzer cells